... commercial gas meter, IC card prepaid residential gas meter, IC card industrial and commercial gas meter, IC card prepaid wireless gas meter,Wired reading ... transmit gas meter, Wireless remote gas meter (solar-assisted), Watching real time remote control system gas meter.Sichuan Haili Intelligent & technology ... would give you a warm reception. ... Rotary mechanical type gas flow meter (G1.6, G2.5, G4)